Designed by Mariano Benlliure, it consists of a bronze statue of Agustina de Aragón topping off a stone pedestal that displays two other sculptural groups and a number of reliefs.

Predated by earlier initiatives to erect a monument to Agustina de Aragón tracing back in time at least to 1901, the committee that managed the project awarded the design to Mariano Benlliure in 1907.

[1] Cast in bronze at Cescati's foundry in Barcelona,[2] the dashing figure of Agustina de Aragón topping off the monument—reportedly inspired in real-life Lucrecia Arana—[3] is depicted wearing an artillery open front jacket with an epaulette and a shoulder pad,[4][5] while stepping on a cannon.

[8] The front side also presents a relief illustrating the feat of Agustina de Aragón using the cannon.

[6] The monument was unveiled on 29 October 1908 at its location in the plaza del Portillo, during a ceremony attended by Alfonso XIII and Victoria Eugenie; Antonio Maura (Prime Minister) and Florencio Jardiel (Dean of the Cathedral of Zaragoza) intervened as speakers.